Putting marker



FIG. 1 is a perspective top front side view of a putting marker, showing my new design;

FIG. 2 is a right-side elevation view thereof, with a left said elevation view being identical; and,

FIG. 3 is a front side elevation view thereof, with a rear side elevation view, top side elevation view and bottom side elevation view being identical. 

CLAIM The ornamental design for a putting marker, as shown and described. 